Add a note that the code samples are designed to demonstrate API calls, and not the best engineering practices.
Add a note that the code samples are designed to demonstrate API calls, and not the best engineering practices.

Change-Id: Ifd30ae6070aa4eed16b2e66fd6304e9a1871c012

jsimonweb/csharp-docs-samples,jsimonweb/csharp-docs-samples,GoogleCloudPlatform/dotnet-docs-samples,GoogleCloudPlatform/dotnet-docs-samples,jsimonweb/csharp-docs-samples,jsimonweb/csharp-docs-samples,GoogleCloudPlatform/dotnet-docs-samples,GoogleCloudPlatform/dotnet-docs-samples